Edit
Undo reverses the last command.
Redo reapplies the last command reversed by Undo.
Cut places selected objects onto the clipboard and deletes them.
Copy places selected objects onto the clipboard.
Paste moves the contents of the clipboard to the current document.
Duplicate Selection is a shortcut for Copy + Paste.
Refresh redraws the display.
Box Selection allows selecting all objects in a rectangular area.
Select All selects all objects in the current document.
Delete deletes the current selection.
Placement... opens the Placement dialog for the selected object.
Alignment... opens the Alignment dialog for the selected objects.
Toggle Edit Mode turns Edit Mode on or off for the selected objects.
Preferences opens the user Preferences dialog.